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A variety of topics related to the operation and maintenance of pumps and electrical systems in utility settings. It addresses common issues such as pump failures, electrical motor problems, and troubleshooting techniques. Answers to multiple-choice questions on topics like the causes of pump failures, the effects of over-lubrication, the importance of proper packing maintenance, and the steps to take when an electrical motor catches fire. Additionally, it covers broader management and organizational topics, such as the benefits of decentralized authority, the role of public relations, and the purpose of record-keeping. Overall, this document offers valuable insights and problem-solving strategies for professionals working in the utility industry, particularly those responsible for the operation and maintenance of pumping and electrical systems.
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A pump is delivering at less than the expected rate of discharge. Which of the causes listed below is incorrect? A. speed of motor too low B. pump not primed C. impeller clogged D. discharge head too low - Answer: D. discharge head too low Metal pipes often fail because of A. back siphonage B. browning movement C. galvanic action D. reverse osmosis - Answer: C. galvanic action
When a fire hydrant is operated, it should be A. just opened enough to have a flow B. opened fully C. opened halfway D. regulated to flow required - Answer: B. opened fully If the pump bearings on horizontal centrifugal pumps are over lubricated, the most important effect is that the extra lubricant A. will result in smoother and more efficient operation of the pump B. will not make any difference in the operation of the pump C. will be wasted D. shaft or shaft sleeve will be damaged - Answer: D. shaft or shaft sleeve will be damaged If packing is not maintained properly, A. cavitation damage will result B. impeller will corrode C. loss of suction due to air being allowed to enter pump D. shaft or shaft sleeve will be damaged - Answer: C. loss of suction due to air being allowed to enter pump In certain situations, a supervisor encourages the employees to make their own decisions. This is considered to be A. against the rules to follow past experiences in decision-making B. bad form since the supervisor eventually loses control C. highly desirable, since it encourages employee growth and frees the D. supervisor for other tasks E. passing the buck - Answer: C. highly desirable, since it encourages employee growth
C. machine manufacturer's manual D. work order - Answer: C. machine manufacturer's manual How can the supervisor be certain that scheduled maintenance is completed? A. ask the workers B. hire someone to inspect completed work C. use a form that compares work assigned with work completed D. wait and see if there are any failures - Answer: C. use a form that compares work assigned with work completed Word has just come down from the top that operating funds are being cut. How should this be handled? A. cut the supplies and repairs in order to balance the budget B. fire some of the less-productive old employees C. keep it quiet and do what you have to do--"The less said the better" D. let the other personnel know what the situation is and ask for their help - Answer: D. let the other personnel know what the situation is and ask for their help One opening has become available which would be an advancement to any one of three qualified eager employees. How should this situation be handled? A. hire an outsider to fill the position B. pick one and notify all personnel of the change C. split the work between the three and leave the position open D. talk to the three as a group, explain the situation and make your selection, then notify all personnel of the change - Answer: D. talk to the three as a group, explain the situation and make your selection, then notify all personnel of the change One of the employees in your crew complains about having to do a hard job. The proper thing to do is
A. explain that all employees must do their fair share of the hard work as well B. give the easier tasks C. ignore the complaint D. promise that the next assignments will be easier ones E. tell the employee to shut up and work or quit and go home - Answer: A. explain that all employees must do their fair share of the hard work as well Occasionally some of the people on a work crew will indulge in active horseplay. This should be A. discouraged because some of the workers might not like it B. encourage because it promotes good fellowship C. permitted as it is a form of relaxation D. stopped immediately because it is likely to cause an accident - Answer: D. stopped immediately because it is likely to cause an accident The gas most commonly associated with fresh wastewater is A. carbon dioxide B. carbon monoxide C. hydrogen sulfide D. oxygen - Answer: D. oxygen The electrical disconnect for a pumping station motor can trip out under which one(s) of the following possibilities? A. clogged pump inlet B. low temperature C. strike by lightning D. worn packing - Answer: C. strike by lightning One of the electric motors in the facility has overheated and caught fire. Select the correct sequence of steps you would take.
C. the pump amperage was decreased D. the voltage was suddenly increased - Answer: A. a discharge valve was closed You have been directed to examine and review the plans and specifications for a new wastewater pump station prior to the advertising for construction bids. Which of the following is of least significance to your review? A. the clearance around and above pumps, motors, valves and control switch gear B. the provisions for ingress and egress for both wet well and dry well C. the size and geometry of the wet well D. the specific colors for all piping - Answer: D. the specific colors for all piping Which one(s) of the following items should be inspected when responding to a lift station alarm at night? A. dry well B. motor control center and power panel C. operation of ventilation equipment D. all of the above - Answer: D. all of the above What is the greatest distance at which manholes should be installed for an 8-inch sewer line? A. 100 feet B. 200 feet C. 300 feet D. 400 feet - Answer: C. 300 feet Disaster planning is A. having manuals ready so they can be read if a disaster occurs B. something that, if properly done, will not need to be revised C. useful in reducing confusion in the event of a disaster D. none of the above - Answer: C. useful in reducing confusion in the event of a disaster
The best discipline is A. authoritarian B. general supervisory C. self-discipline D. theocratic - Answer: C. self-discipline Staffing a new system should be viewed primarily as the function of A. every operator B. personnel department C. the employee D. the supervisory management - Answer: D. the supervisory management Organization charts are helpful to show A. how the collection system is organized B. how to locate sewers C. the structure of an agency D. the way to select solutions to problems - Answer: C. the structure of an agency Decentralization of organization refers to A. nominating new supervisors B. looking at all positions, and possibly redelegating authority C. firing all employees and hiring new ones D. eliminating some departments - Answer: B. looking at all positions, and possibly redelegating authority Which one of the following would not be considered a natural event? A. explosion B. flood
The best way to record all work done is through A. closed circuit TV B. polaroid system C. tape recorder D. work order system - Answer: D. work order system The most important function of record-keeping is A. they record how much money was budgeted and how much we spent B. they record the past and provide a sound basis on which to plan the future C. they record what was done and when it was done D. they record where we've been and how we got where we are today - Answer: B. they record the past and provide a sound basis on which to plan the future All of the following are types of starters for electrical motors except A. actuator B. autotransformer C. reduced voltage D. resistors - Answer: A. actuator Instrumentation friction discs or clutch surfaces should be A. frequently brushed briskly with a solution of water and soda. B. kept free of oil C. oiled frequently D. roughened with emery cloth as necessary - Answer: B. kept free of oil If a generator will not start, check for A. loose terminal connections B. shaft binding or sticking
C. tripped circuit breakers D. all of the above - Answer: D. all of the above Given the data below, what is the most likely cause of the problem? DATA: Wet well inlet increased flow because of rain Wet well unchanged at excessively high level Lead pump running Follow pump running Lead pump check valve lifting arm up Follow pump check valve lifting arm down Force main pressure remains at normal range for one pump Low-level pressure switch normal High-level pressure switch normal Electrical controls automatic A. lead pump clogged B. force main pressure too high C. follow pump clogged D. both pumps clogged - Answer: C. follow pump clogged Given the data below, what is the most likely cause of the lift station problem? DATA: Wet well inlet has normal dry weather flow Wet well empty with flow going directly to pump suction Lead pump is running Follow pump is running Lead and follow pump check valve lifting arms are slightly above closed position Forced main pressure low and erratic Lead air compressor running Low-level pressure switch is closed Electrical controls automatic mode
A. customer B. function C. product D. territory - Answer: B. function Decentralized authority describes the process of A. changing an organization from centralized to decentralized again B. delegating authority to one's superiors instead of one's subordinates C. delegating power for decisions to lower levels D. retracting authority which has been previously delegated, and probably changing functions and duties - Answer: C. delegating power for decisions to lower levels What term means that the employee reports to one specific supervisor, and that the delegation of authority comes from one particular supervisor to the employee? A. unity of command B. span of supervision C. organizational chart D. formal organization - Answer: D. formal organization It is generally accepted by psychologists that human behavior is goal-oriented and A. selfish B. random C. other-centered D. motivated - Answer: D. motivated Steel tanks may be protected from rusting by A. alternately wetting and drying walls B. maintaining humidity in tank C. protective coatings
D. washing tank walls - Answer: C. protective coatings What should be the most important concern of an operator after a bypass? A. aquatic life B. clean-up procedures C. health-related effects D. odors - Answer: C. health-related effects A supervisor could be responsible for an accident, in part or completely, by A. disregarding an unsafe work environment B. haste in requiring work performed C. overlooking a potential hazard D. all of the above - Answer: D. all of the above Increased funds for the year are limited. However, 2 or 3 outstanding newly employed individuals are grossly underpaid for their services. How should this situation be handled? A. call a staff meeting, explain the situation and then raise their salaries B. don't give anyone a raise C. pass the word that there will be no raises but change their titles, not their duties, and raise their pay D. Say nothing and do nothing because it is none of the employee's business - Answer: A. call a staff meeting, explain the situation and then raise their salaries When purchased materials are received by the utility, they should not be A. counted and checked against P.O.'s B. inspected C. placed on shelves where they will be used first D. recorded - Answer: C. placed on shelves where they will be used first
B. minimizes vandalism C. quieter operation D. requires water lubrication - Answer: D. requires water lubrication Possible types of atmospheric hazards found in manholes include A. explosion B. oxygen deficiency C. toxic gases D. all of the above - Answer: D. all of the above Given the data below, what is the most likely cause of the problem? DATA: Wet well inlet is normal for dry weather flow. Wet well alternating excessively high and excessively low levels Lead pump starts at right level, level continues to rise, pump stops at right level Follow pump starts at right level, level drops, pump stops at right level Lead pump check valve lifting arm remains stationary in lowered position when pump starts and stops Follow pump check valve lifting arm rises when follow pump starts, goes to lowered position when it stops Force main pressure remains same when lead pump starts, increases when follow pump starts, drops to previous level when follow pump stops Low-level pressure switch normal High-level pressure switch normal Electrical controls automatic A. lead pump clogged B. force main pressure too high C. follow pump clogged D. both pumps clogged - Answer: A. lead pump clogged
Given the data below, what is the most likely cause of the problem? DATA: Wet well inlet has increased flow because of rain Wet well drops normally from weather conditions, rises much more rapidly than normal Lead pump cycles on and off at right levels faster than normal Follow pump cycles on and off at right levels faster than normal Follow pump motor shaft turns backwards when off with lead pump running Follow pump check valve lifting arm stays in raised position Force main pressure high with both pumps on, too low when lead pump is on alone Air bubbler system normal Electrical controls on automatic A. check valve in follow pump clogged B. follow pump check valve stuck closed C. follow pump electrical system wired backwards D. lead pump check valve clogged - Answer: A. check valve in follow pump clogged Which one of the following provides a profile of hazardous substances or mixtures? A. Occupational Safety and Health Administration (OSHA) B. Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) C. Code of Federal Regulations (CFR) D. material safety data sheet (MSDS) - Answer: D. material safety data sheet (MSDS) An atmosphere is defined as oxygen deficient if it contains less than what percent oxygen by volume? A. 16.5% B. 18.5% C. 19.5% D. 19.8% - Answer: C. 19.5%
D. inorganic sulfides - Answer: B. oxygen What would be the cause of a shorted winding in a motor? A. overloaded B. stalled C. foreign material in motor D. incorrect power - Answer: C. foreign material in motor What should be the air gap separation between a potable water pipe and the rim of a wastewater tank? A. at least one pipe diameter above the rim B. at least one and a half pipe diameters above the rim C. at least two pipe diameters above the rim D. at least two and a half pipe diameters above the rim - Answer: C. at least two pipe diameters above the rim Which of the following types of fire extinguishers should be used on electrical fires? A. fire-resistant blanket B. sodium bicarbonate C. carbon dioxide D. soda-acid - Answer: C. carbon dioxide
